modified webcam software for visually impaired

[Helios <heliooos gmail com>]

Hi,
we are just testing a standard webcam to be used as a digital
magnifier for visually impaired users. Such gadget could be very
useful, as many low vision users need such device, but those
commercially available are Windows only and mostly very expensive.
We tested common Genius webcam with manual focus feature using Cheese,
however, there are no features needed for this kind of users (supplied
by my visually impaired sister):
- inverse color mode
- color profiles (eg. yellow text on blue background - simple runs in
BW mode only and replaces black with yellow and white with blue)
- guiding lines (can provide some screenshots)
- and some others

WxCam, which looked very promising, is not possible to install on my
sisters laptop (Sysinfo output attached) running Vinux 2.0. Are there
any plans for such features? Maybe, they could be just added to Cheese
or WxCam. In my opinion, this could help a lot of users as the price
of the webcams is much lower and no additional payment for commercial
software would be needed.

regards

Helios

System information report, generated by Sysinfo: 1.1.2011 22:45:35
http://sourceforge.net/projects/gsysinfo

SYSTEM INFORMATION
	Running Ubuntu Linux, the Ubuntu 10.04 (lucid) release.
	GNOME: 2.30.2 (Ubuntu 2010-06-25)
	Kernel version: 2.6.32-27-generic (#49-Ubuntu SMP Wed Dec 1 23:52:12 UTC 2010)
	GCC: 4.4.3 (i486-linux-gnu)
	Xorg: unknown (10 November 2010  11:25:26AM) (10 November 2010  11:25:26AM)
	Hostname: HP550
	Uptime: 0 days 11 h 29 min

CPU INFORMATION
	GenuineIntel, Intel(R) Celeron(R) CPU          550  @ 2.00GHz
	Number of CPUs: 1
	CPU clock currently at 1994.940 MHz with 1024 KB cache
	Numbering: family(6) model(22) stepping(1)
	Bogomips: 3989.88
	Flags: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx lm constant_tsc up arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm lahf_lm

MEMORY INFORMATION
	Total memory: 994 MB
	Total swap: 2544 MB

STORAGE INFORMATION
	SCSI device -  scsi0
		Vendor:  TSSTcorp 
		Model:  CDDVDW TS-L632N  
	SCSI device -  scsi2
		Vendor:  ATA      
		Model:  WDC WD1600BEVT-6 

HARDWARE INFORMATION
MOTHERBOARD
	Host bridge
		Intel Corporation Mobile GME965/GLE960 Memory Controller Hub (rev 0c)
		Subsystem: Hewlett-Packard Company Device 3618
	PCI bridge(s)
		Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
		Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
		Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 03)
		Intel Corporation 82801 Mobile PCI Bridge (rev f3) (prog-if 01)
	USB controller(s)
		Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03)
		Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03) (prog-if 20)
		Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
		Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
		Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
		Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03) (prog-if 20)
	ISA bridge
		Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
		Subsystem: Hewlett-Packard Company Device 3618
	IDE interface
		Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03) (prog-if 8a [Master SecP PriP])
		Subsystem: Hewlett-Packard Company Device 3618

GRAPHIC CARD
	VGA controller
		Intel Corporation Mobile GME965/GLE960 Integrated Graphics Controller (rev 0c)
		Subsystem: Hewlett-Packard Company Device 3618

SOUND CARD
	Multimedia controller
		Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
		Subsystem: Hewlett-Packard Company Device 3618

NETWORK
	Network controller
		Broadcom Corporation BCM4312 802.11b/g (rev 01)
		Subsystem: Hewlett-Packard Company Device 137d
	Ethernet controller
		Intel Corporation 82562GT 10/100 Network Connection (rev 03)
		Subsystem: Hewlett-Packard Company Device 30d8